EFFECT OF WEATHERING ON THE REACTIVITY OF COMMERCIAL PORTLAND CEMENT
BATCHES OF FRESHLY GROUND PORTLAND CEMENT WERE EXPOSED TO THE LABORATORY ATMOSPHERE AND TO CO2 AND/OR WATER VAPOR FOR VARIOUS LENGTHS OF TIME. THE SAMPLES WERE THEN DIVIDED INTO TWO PARTS, ONE FOR IMMEDIATE STUDY AND ANOTHER FOR STUDY AFTER TWO MONTHS OF STORAGE. THE REACTIVITIES OF THESE CEMENT SAMPLES /AND OF UNEXPOSED CONTROLS/ WERE FOLLOWED MAINLY BY ELECTRON-OPTICAL TECHNIQUES. THE CEMENT SAMPLES EXPOSED TO THE LABORATORY ATMOSPHERE WHEN TESTED IMMEDIATELY AFTER EXPOSURE SHOWED REACTIVITIES SIMILAR TO THAT OF UNEXPOSED CEMENT, BUT THE REACTIVITIES DECREASED MARKEDLY ON STORAGE. DRY CO2 OR WATER VAPOR ALONE WAS FOUND TO HAVE NO SIGNIFICANT EFFECT ON THE REACTIVITY OF CEMENT. EXPOSURE TO HUMID CO2 GREATLY INCREASED THE REACTIVITY IMMEDIATELY AFTER EXPOSURE, BUT ON STORAGE IT DECREASED COMPARED WITH THE CONTROL. /AUTHOR/
- Record URL:
-
Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
-
Corporate Authors:
Highway Research Board (HRB)
Washington, DC -
Authors:
- Chatter, J S
- Jeffery, J W
- Publication Date: 1966
Media Info
- Media Type: Print
- Features: Photos; References;
- Pagination: pp 254-257
- Monograph Title: Symposium on structure of Portland cement paste and concrete
-
Serial:
- Highway Research Board Special Report
- Issue Number: 90
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Carbon dioxide; Chemical reactivity; Electrons; Handling and storage; Laboratory tests; Optical devices; Portland cement; Samples; Storage facilities; Water vapor; Weathering
- Old TRIS Terms: Electron optics
- Subject Areas: Freight Transportation; Highways; Materials; Terminals and Facilities;
Filing Info
- Accession Number: 00212310
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Dec 12 1994 12:00AM